These skinks are very similar to Mabuya gravenhorstii. One of the distinguishing features of M. elegans is that many individuals, such as this one, have a reddish patch on the neck.

Here is a list of all the reptiles and frogs I saw on this 2007 trip to Madagascar.

These skinks were abundant in open areas at the forest's edge and near the beach. I uncovered the one in the third photograph by rolling a log. Normally, lizards uncovered in this way will either freeze in surprise, or dash off under the nearest object (often the same object they had been under before it was moved). In this case though, the skink took the opportunity to pounce on a nearby cricket that had also been surprised by the sudden removal of its cover.

Of the dozens and dozens of fairly generic Trachylepis skinks I saw on this trip, this was the only individual that I'm confident is T. elegans, due to the reddish patch on the neck.

Here is a list of all the reptiles and frogs I saw on this 2023 trip to Madagascar.

This skink was in the same area as the one above that seems like it is definitely T. elegans, so I'm guessing this one is also. The Authority lists Isalo as a known location for T. elegans but not for T. gravenhorstii, so that's a little bit of evidence in favor of my ID.